A case of bilateral bony ankylosis of the temporomandibular joint caused by bilateral chronic parotitis

Abstract

A case of bilateral bony ankylosis of the temporomandibular joint caused by bilateral chronic parotitis is reported. A 52-year-old man was referred to our clinic by an otolaryngologist with the chief complaint of trismus. He had been treated with bilateral chronic parotitis by the otolaryngologist for twenty years. The maximum mouth opening range (MOR) was 4mm. Following diagnosis of bilateral bony ankylosis of the temporomandibular joint, bilateral condyloplasty was performed. After the operation, the maximum MOR increased to 23mm. The patient is now satisfied to be able to eat chunks of food. However, MOR had decreased due to aggravated chronic parotitis, so mouth opening execises were needed to increase MOR.